Why is it the problem of women who need single sex female spaces to sort out everyone else?
It isn't. Female people need female only spaces for equality of access. End of.
Male people wishing to use female spaces need to respect this. They certainly expect a lot of respect from everyone else, and if they care about equality and inclusion and expect others to provide it for them, they need to equally respect and provide it for everyone else.
Male people who do not want female people in their spaces will have to sort out their own issues, we're busy.
Female people who have created a major issue for themselves in using spaces where females may become alarmed or distressed at their presence because of the degree of their appearance change will also need to sort out their own arrangements.
#Notyourmum
Plus: this kind of query is usually nothing more than a barely figleafed attempt to punish and discourage women for daring to say they refuse to accepted being excluded by men. <shrug> "If you don't let men in your spaces then you'll get women with a masculine appearance and then you'll be sorry".
It's not exactly a classy or helpful thing to do really.